Abstract: Abstract: Objective To compare the efficiency of compressive bandage dressing and drainage on the blood loss after
total knee arthroplasty (TKA). Methods Patients (n=120) who visited Tianjin General Hospital Bin Hai Branch and Tianjin
People's Hospital due to varus knee osteoarthritis and underwent TKA were retrospectively analyzed.There are 20 males and
100 females with, mean age was 65.18±6.88 years. Depending on whether placement of drainage, patients were divided into
drainage group (60 cases) and pressure bandage dressing group (60 cases). Blood loss, blood transfusion and full blood count
(FBC) were all analyzed after TKA in both groups. Results Blood loss after TKA in drainage and pressure dressing group
were (1 026.85±274.44),(789.52±251.58) mL respectively. Blood loss was less severe in pressure dressing group than that in
drainage group (t=4.938, P < 0.01). Allogeneic transfusions were needed in 14 cases of drainage group and five cases of pres⁃
sure bandage dressing group. The circumstances that requires blood transfusion was significantly lower in pressure bandage
group than that in drainage group (χ2=5.065, P <0.05). The postoperative limb swelling and postoperative joint mobility did
not show statistical significance (P > 0.05). Conclusion Application of compressive bandage dressing in TKA surgery is
easy to be operate and can reduce perioperative blood loss and allogeneic transfusion incidence.

Key words: arthroplasty, replacement, knee, blood loss, surgical, negative- pressure wound therapy, drainage, total
knee arthroplasty, pressure dressing